34
Is there voltage of 230 VAC in the power sup-
ply terminal block?
Check the connecting of parts of main power
supply circuit.
Check the power supply cable.
Turn ON power supply.
Is the output voltage from the noise
fi
lter P.C.
board 230 VAC?
Replace the noise
fi
lter
P.C. board.
No
Yes
No
Yes
Is the input voltage to the power board 230
VAC?
Replace the reactor.
No
Yes
Is the input voltage to the outdoor electronic
control P.C. board 325 VDC?
Replace the power board.
No
Replace the outdoor electronic control P.C. board.
Yes
Is fuse (F64) blown?
No
Yes
Replace the fuse.
J Check of power supply
MUZ-GB50VA-
E1
/
E2
MUZ-GB50VA-
E3
Is there voltage 230 VAC
between the indoor terminal
block S1 and S2?
No
Yes
Replace the indoor
electronic control P.C.
board.
Rectify indoor/outdoor
connecting wire.
Yes
If light up, OK.
If
fl
ash, refer to 11-3.
Does the left lamp of OPERATION
INDICATOR lamp on the indoor unit
light up?
Dose LED on the inverter P.C.
board light up or
fl
ash? (Refer
to 11-6.4.)
No
Replace the inverter
P.C. board.
Is there voltage 260 - 300 VDC
between DB61 (+) and DB61 (–) on
the inverter P.C. board? (Refer to
11-6.4.)
No
Check the electric parts in main circuit.
Yes
Yes
No
Disconnect the connector (CN61)
between compressor and intelligent
power module.
Turn ON power supply and press
EMERGENCY OPERATION switch.
Inverter P.C. board
(Solder side)
DB61
260 - 300 VDC
Содержание MUZ-GB50VA
Страница 8: ...8 MUZ GB50VA E3 ...